The „Netzwerk Psychische Gesundheit Schweiz“ [„Mental Health Network Switzerland“] has started its activities in December 2011 and consists of organizations from the mental health domain in Switzerland. The Network defines itself as a multisectoral, nationwide initiative for the promotion of mental health and the reduction of psychological diseases in Switzerland. The Network itself does not implement measures. However, it promotes knowledge transfer and exchanges of information and experiences among important actors in the field of mental health in Switzerland. Commissioned by the Swiss Federal Office of Public Health (SFOPH), the Department of Political Science evaluates the Mental Health Network Switzerland. This evaluation is formative, and contributes to the installation and further development of the Network. It not only assesses the underlying conception and development of the Network, but also its chances for success under the given restrictions. The recommendations of this evaluation will give support for upcoming decisions to take concerning the further development of the Network.